Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+
Abstract Ultrafiltration (UF) as a widely used industrial separation method with optimal selection of membrane materials can be applied to extract rare earth metals from dilute solutions formed during the processing of electronic waste by hydrometallurgical methods. In the present work, promising UF...
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| Format: | Article |
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Nature Portfolio
2022-05-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-12377-0 |
| _version_ | 1818238850591358976 |
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| author | Alexandra Pulyalina Konstantin Grekov Vera Tataurova Anna Senchukova Alexander Novikov Ilya Faykov Galina Polotskaya |
| author_facet | Alexandra Pulyalina Konstantin Grekov Vera Tataurova Anna Senchukova Alexander Novikov Ilya Faykov Galina Polotskaya |
| author_sort | Alexandra Pulyalina |
| collection | DOAJ |
| description | Abstract Ultrafiltration (UF) as a widely used industrial separation method with optimal selection of membrane materials can be applied to extract rare earth metals from dilute solutions formed during the processing of electronic waste by hydrometallurgical methods. In the present work, promising UF copolyimide membranes were prepared using [hmim][TCB] ionic liquid (IL) co-solvent which can be considered as an environmentally friendly alternative to conventional solvents. The membranes were characterized by ATR-FTIR, TGA, SEM and quantum chemical calculations. A significant difference in morphology of these membranes was revealed by SEM of membrane cross-sections; the P84 membrane has finger-like structure of porous substrate in contrast to spongy structure of substrate for the P84/IL membrane due to a higher dynamic viscosity of the casting solution. The transport parameters were determined in ultrafiltration tests with pure water and an aqueous solution of bovine serum albumin. The addition of ionic liquid to the P84 casting solution increases the performance of the membrane. The rejection capacity was evaluated with respect to La3+ in the form of a lanthanum alizarin complex (LAC) in aqueous acetone solution. The P84 membrane prepared using IL showed a high rejection (98.5%) with respect to LAC, as well as a significant productivity. |
| first_indexed | 2024-12-12T12:48:12Z |
| format | Article |
| id | doaj.art-6c97a8375a8a48878542fbc245176b7c |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-12T12:48:12Z |
| publishDate | 2022-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-6c97a8375a8a48878542fbc245176b7c2022-12-22T00:24:03ZengNature PortfolioScientific Reports2045-23222022-05-0112111210.1038/s41598-022-12377-0Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+Alexandra Pulyalina0Konstantin Grekov1Vera Tataurova2Anna Senchukova3Alexander Novikov4Ilya Faykov5Galina Polotskaya6Institute of Chemistry, Saint Petersburg State UniversityThe Bonch-Bruevich St. Petersburg State University of TelecommunicationsInstitute of Chemistry, Saint Petersburg State UniversityInstitute of Chemistry, Saint Petersburg State UniversityInstitute of Chemistry, Saint Petersburg State UniversityInstitute of Chemistry, Saint Petersburg State UniversityInstitute of Chemistry, Saint Petersburg State UniversityAbstract Ultrafiltration (UF) as a widely used industrial separation method with optimal selection of membrane materials can be applied to extract rare earth metals from dilute solutions formed during the processing of electronic waste by hydrometallurgical methods. In the present work, promising UF copolyimide membranes were prepared using [hmim][TCB] ionic liquid (IL) co-solvent which can be considered as an environmentally friendly alternative to conventional solvents. The membranes were characterized by ATR-FTIR, TGA, SEM and quantum chemical calculations. A significant difference in morphology of these membranes was revealed by SEM of membrane cross-sections; the P84 membrane has finger-like structure of porous substrate in contrast to spongy structure of substrate for the P84/IL membrane due to a higher dynamic viscosity of the casting solution. The transport parameters were determined in ultrafiltration tests with pure water and an aqueous solution of bovine serum albumin. The addition of ionic liquid to the P84 casting solution increases the performance of the membrane. The rejection capacity was evaluated with respect to La3+ in the form of a lanthanum alizarin complex (LAC) in aqueous acetone solution. The P84 membrane prepared using IL showed a high rejection (98.5%) with respect to LAC, as well as a significant productivity.https://doi.org/10.1038/s41598-022-12377-0 |
| spellingShingle | Alexandra Pulyalina Konstantin Grekov Vera Tataurova Anna Senchukova Alexander Novikov Ilya Faykov Galina Polotskaya Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+ Scientific Reports |
| title | Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+ |
| title_full | Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+ |
| title_fullStr | Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+ |
| title_full_unstemmed | Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+ |
| title_short | Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+ |
| title_sort | effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of la3 |
| url | https://doi.org/10.1038/s41598-022-12377-0 |
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